I can't remember that we've EVER gotten the flu, but during the years I was still working outside of home, I usually caught a cold or two which sometimes developed into bronchitis, and more rarely required antibiotics to zap it.
When OWC's dad was alive, he always called the family home for Thanksgiving dinner & vaccinated everyone for flu at that time. He was a GP in St. Louis. We didn't argue & neither of us ever had any repercussions either. Since his death our inoculations have been spotty, although since OWC's heart attack he gets one whether he needs it or not, and we've both had the pneumonia vaccine.
Barbara? I have to laugh at your hermit description, because for many years our email, facebook & other user names has been 'We.Be.Hermits'. And we're getting worse the older we get . . . we can have a grocery list as long as your arm, and still sit here and procrastinate for days. Once we get out among 'em, we're fine, but getting our butts to the car and actually driving away is always a major ordeal.